BCM的多阶段译码算法

任杰; 苗俊刚; 张会生; 陈正康

BCM的多阶段译码算法

1.
北京航空航天大学电子信息工程学院, 北京 100191
2. 西北工业大学电子信息学院, 西安 710072

详细信息

中图分类号: TN911.22
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出版历程
- 收稿日期: 2013-03-18
- 网络出版日期: 2014-01-20

Multistage decoding algorithm of block coding modulation

1.
School of Electronic and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
2. School of Electronics and Information, Northwestern Polytechnical University, Xi'an 710072, China

摘要

摘要: 针对在某些通信系统中对译码速度较高的需求，基于分组编码调制（BCM，Block Coding Modulation）的多级结构，给出了一种多级BCM的多阶段译码算法：从BCM中第一级分量码开始，根据BCM的级数逐阶段进行译码，针对每级分量码，采用软判决最大似然译码，直到最后一级分量码，从而降低了译码复杂度.仿真结果表明，与传统Viterbi译码算法相比，提出的多阶段译码算法的误码性能与其相当，信噪比较小时甚至更好，但译码复杂度远低于传统Viterbi译码方法.
- 多级BCM /
- 多阶段译码 /
- 误码性能 /
- 译码复杂度
Abstract: Considering relatively higher requests of complexity of decoding algorithms due to the demand of higher decoding speed in some telecommunication systems, a multistage decoding algorithm was given based on the multilevel structure of block coding modulation (BCM). Each stage of the algorithm refers to decoding of each component code in BCM: From the first component code to the last one, each component code was decoded by a soft-decision decoder based on the judgment of the maximum likelihood progressively, thus the decoding complexity was decreased. As is illustrated in the results of the simulation, the error performance of the system applying this algorithm is approximately the same as the error performance of the system applying the Viterbi decoding algorithm, and the former is even much better than the latter when the signal-noise ratio is relatively lower, while the decoding complexity of the former is much lower than that of the latter.
- multilevel structure of BCM (block coding modulation) /
- multistage decoding algorithm /
- error performance /
- decoding complexity

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参考文献(12)

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